Workplaces are critical environments. So, it’s vital to monitor indoor air quality since it affects occupant comfort, health and productivity.

New health and safety rules recommend checking the air change rate by measuring the CO2 concentration against a target value. Here, we explain why and how it’s done.

As lockdown rules are eased in many parts of the world, the production of respiratory face masks is being ramped up to cater to massive demand from countries affected by the COVID-19 pandemic.